Here is the full list of all 22 Romopolis achievements.
Win 12 sandbox scenarios.
Build a city with 2,000 residents.
Reach 25 total happiness.
Earn all the trophies.
Complete the entire campaign.
Earn all the medals.
Upgrade 300 buildings.
Earn 2,000,000 Dn.
Train 120 workers.
Demolish 50 buildings.
Buy 20 concessions.
Earn 12 trophies.
Earn 12 medals.
Order 25,000 units of wood and stone.
Build 250 buildings.
Upgrade 100 buildings.
Clear 50 plots.
Upgrade 25 buildings.
Build 75 buildings.
Demolish 10 buildings.
Demolish 2 buildings.
Build 10 buildings.